What absorbs at 428 cm⁻¹ in an FTIR spectrum?
A band near 428 cm⁻¹ can point to several functional groups. Below are the most likely assignments, ranked by how much published evidence supports each — every one traceable to literature (DOI) and cross-validated against our 130,000+ reference spectra and knowledge graph.
Backed by 8 cited sources
Quick answer
A band near 428 cm⁻¹ is usually interpreted by checking which functional groups repeatedly co-occur there in the literature, then confirming at least one or two additional peaks in the same sample. This page ranks those assignments by accumulated evidence rather than by a single fixed textbook rule.
Mogelijke functionele-groeptoewijzingen
| Functionele groep | Ondersteunende feiten | Geciteerde bronnen | Hoogste vertrouwen |
|---|---|---|---|
| Metal oxygen | 4 | 4 | 1,0 |
| Chlorine | 1 | 1 | 1,0 |
| Siloxane (Si-O-Si) | 1 | 1 | 1,0 |
| Silicon-oxygen (Si-O) | 1 | 1 | 1,0 |
| Water (H2O) | 1 | 1 | 1,0 |
| Phosphate (PO4) | 1 | 1 | 0,7 |
Ranglijst weerspiegelt cumulatief literatuurbewijs, niet één gezaghebbende regel. Bevestig altijd aan de hand van uw monsterecontext.
Possible materials
| Materiaal | Ondersteunende pieken | Overlapping groups | Geciteerde bronnen |
|---|---|---|---|
| TiO2 | 428, 1700, 1093 | Metal oxygen | 1 |
| nanoparticles | 428, 1732, 1647 | Metal oxygen | 1 |
Materials are shown only when the same literature pool supports this band and at least one additional characteristic peak.
Spectrum logic
This band becomes meaningful only when read with its neighboring peaks. In practice, analysts first look at the assignments above, then check whether the same sample also shows other peaks expected for the same structural motif. A lone band near 428 cm⁻¹ is usually not enough for material identification by itself.
Real-world usage
This type of query is common in polymer identification, unknown plastic screening, QC troubleshooting, recycled-material verification, and literature-backed peak assignment review.
Common mistakes
- Treating one isolated band as proof of a material without checking at least one or two supporting peaks.
- Ignoring overlap: multiple functional groups can contribute near the same wavenumber.
- Skipping validation when additives, blends, oxidation, or contamination may distort the spectrum.
Verification advice
When ambiguity remains, validate the hypothesis with DSC, GC-MS, or TGA, especially for blends, degraded samples, and filled polymers.
Literatuur achter deze toewijzingen
-
Metal oxygen vertrouwen 1,0
“The peaks located at 493, 443 and cm-1 428 is likely due to the vibration of the TiO 2, which confirms the prepared sample is TiO nanostructures.”
Synthesis and Characterization of Spindle-Like TiO2 Nanostructures and Photocatalytic Activity on Methyl Orange and Methyl Blue Dyes Under Sunlight Radiation DOI: 10.1007/s10876-017-1245-6 -
vertrouwen 1,0
“The peaks at 1124 and 428 cm-1 are the typical absorption peaks of the Zn-O bond,”
Kumar 等 - 2021 - Centella asiatica mediated facile green synthesis DOI: 10.1016/j.inoche.2021.108865 -
Water (H2O) vertrouwen 1,0
“hydroxyl group and water Silicaandsilicates;aluminumoxyhydroxide 7 1099 Si-Ostretch;OHvibration andironoxyhydroxides 4 1681 Stretching Water molecules SO428 665”
The Physico-Chemical and Mineralogical Characterization of Mg-Rich Synthetic Gypsum Produced in a Rare Earth Refining Plant DOI: 10.3390/su13094840 -
vertrouwen 1,0
“After calcinalamp (HWL 500 W 225 V E40) was purchased from the OSRAM tion, all the characteristic peaks of the ligand disappeared and Company in China and the short wavelength components of the only a peak at 428 cm-1, which is attributed t”
Bijanzad 等 - 2015 - Photocatalytic activity of mesoporous microbricks DOI: 10.1016/S1872-2067(14)60305-3 -
vertrouwen 1,0
“the sharpness of these bands fairly cm-1, cm-1 428 can be attributed to Fe-O symmetric stretching indicate lack of defects and crystal purity.”
Kiss 等 - 2015 - Elucidating Some Issues Regarding the Synthesis of DOI: 10.1063/1.4937250 -
vertrouwen 1,0
“In cm-1 450S and 650S, the twin peaks near 428 and 444 [74, cm-1 Si-O Si-O-Si 75] are from bending;”
Biochar from co-pyrolysis of urban organic wastes—investigation of carbon sink potential using ATR-FTIR and TGA DOI: 10.1007/s13399-020-01000-9 -
Chlorine vertrouwen 1,0
“423.8 16.4 the control, only a slight increase in the degradation peak temperature 428.2 and a decrease of the enthalpy due to the lower crystallinity of the CO+pH +CL 309.3;”
Yavuz 等 - 2018 - Structural coloration of chitosan coated cellulose DOI: 10.1016/j.carbpol.2018.03.084 -
Phosphate (PO4) vertrouwen 0,7
“PO ν in region 428-455”
Seredin 等 - 2020 - Development of a new approach to diagnosis of the DOI: 10.1038/s41598-020-78078-8
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